<nav>
  <%= tabs_tag(:namespace => :sub_nav, :open_tabs => {}, :builder => MenuTabBuilder) do |tab| %>
	  <%= tab.report_group '<i class="fa fa-lg fa-fw fa-desktop"></i> 
        <span class="menu-item-parent">
          用户统计
        </span>'.html_safe, admin_report_groups_path %>
    <%= tab.tev '<i class="fa fa-lg fa-fw fa-desktop"></i> 
        <span class="menu-item-parent">
          收视统计 
        </span>'.html_safe, tev_admin_report_groups_path %>
	  <%#= tab.flow_report '<i class="fa fa-lg fa-fw fa-desktop"></i> 
        <span class="menu-item-parent">
          3G流量查询 
        </span>'.html_safe, flow_report_admin_report_groups_path  %>
  <% end %>
</nav>